Computer backpanel portion



FIG. 1 is an isometric view of a computer back panel portion showing my new design;

FIG. 2 is an enlarged isometric view thereof; and,

FIG. 3 is another isometric view thereof.

A computer is shown in broken lines in FIGS. 1 and 3 for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for the computer backpanel portion, as shown and described. 